.breadcrumb-enter-active,
.breadcrumb-leave-active {
  transition: all 0.5s;
}

.breadcrumb-enter-from,
.breadcrumb-leave-active {
  opacity: 0;
  /* 在 x 轴移动 20px */
  transform: translateX(20px);
}

.breadcrumb-leave-active {
  position: absolute;
}

/* 路由切换动画 */
.fade-transform-leave-active,
.fade-transform-enter-active {
  transition: all 0.5s;
}

.fade-transform-enter {
  /* 透明度为0 */
  opacity: 0;
  /* 横向移动 30px */
  transform: translateX(-30px);
}

.fade-transform-leave-to {
  opacity: 0;
  transform: translateX(30px);
}